_____ the girl was too selfish and never thought of others, she wasn’t getting on well with her classmates.

A. Since                     B. Unless                 C. Though                     D. Until

 The boy seems _____ a lot of books, for he knows so much.

    A. that he has read   B. to read               C. has read                    D. to have read

 I looked _____ the direction of the voice, only to find it was a lovely dog.

A. to              B. toward         C. in                 D. for

 “We_____ the train had we left earlier,” the wife complained to the husband.

       A. wouldn’t miss                                     B. wouldn’t have missed

       C. would miss                                         D. would have missed

 He was then admitted to a key university, _____ he graduated with honors.

       A. of which               B. on which             C. about which               D. from which

 The 11.11 Shopping Festival held by Taobao attracted thousands of online shoppers,  

   _____ a record of nearly 20 billion yuan within 24 hours.

       A. to make               B. made                  C. making                      D. having made

 I’ve always _____ Bill for his courage and determination.

       A. looked up to          B. lived up to           C. faced up to                 D. added up to

 Not until I visited Guilin _____ it really worthy of the reputation.

A. didn’t I find          B. did I find            C. I didn’t find              D. I found

 When you refer to an English dictionary, you’re _____exposed to the basic words and learn how to use them.

       A. merely                  B. repeatedly            C. occasionally               D. hardly

—I wonder _____ makes the video Gangnam Style so popular.

—The unique dance moves and funny horse riding scenes.

　　　 A. how is it that　　　　　　　　　　　　　　　　　　　 B. what is it that　　　　　

　　　 C. how it is that　　　　　　　　　　　　　　　　　　　 D. what it is that